The kingdom of Ellerald, where stretch the roots of sacred Sephirot, is under attack by monsters that ravage the land and its people. The royal priestess Cecily sustains the hearts of the populace through her kindness and piety, while the well-endowed warrior Noein and her soldiers keep the beasts at bay. The enemy Lustfiends seem as dumb as they are vile, so their pincer assault comes as a shock. When the city’s remaining defenses prove too meager, only Princess Cecily can save the kingdom... but how can this sheltered damsel fend off nightmarish waves of sex-craved creatures when she can’t lift a sword to save her life? Cecily harnesses the power of Eden to becoming the titular (and titillating) divine warrior, Eden’s Ritter Lucifel! With powerful forbidden magics, she becomes a one-woman army—a guardian angel to her people. But these powers come at a cost, for the longer she uses them, the more unbearable the aching of her body becomes. Each battle is a race against the clock, pushing Cecily to her limits as she strives to overcome her adversaries before her own sexual urges overcome her! It’s up to you to help Cecily make the right choices in battle and lead her to victory, for should she fail to do so, her enemies will take advantage of her compromised state to bring her journey to a bad ending.

Half a year after the lustfiend invasion initiated by the traitor Archbishop Rudolf— The Elleraldian throne is Cecily

In the Xenoarachne Defeat story, the heroines are caught like flies in the web of one of their most dangerous enemies. Her soft and silken threads draw them in ever closer, until the former heroines find themselves dancing on her strings... [From Steam]

Once, under the name of the Mad Emperor Galberos, the Holy Galberia Empire was the most powerful and feared military nation, setting the continent ablaze with war. Now, to counter the growing threat of the cunning Xenobite Cult, Queen Cecily of El Arad travels to this enemy nation to form an alliance. But what she finds there is a horde of grotesque, undead monsters and the Galberian Dragon Knights fighting to protect their homeland. At the forefront stands Hildegard, the “Dragon Princess” who now rules the Galberian Empire—and the newest Eden’s Ritter. Hildegard, who sacrificed her own father and even her “future” to the divine corpse Lilith for her ambitions and ideals, now faces the temptations of nightmares and unprecedented pleasure in her eternally youthful body. As the young empress walks the path of conquest, what awaits her at the end: bloodstained glory, or inescapable ecstasy? [Translated from dlsite]

A war sparked by lost love, unrelenting hatred, and unforgettable ecstasy—this conflict would later be known as the Great War of Lost Joy. One week after the war began… The Holy Galberia Empire, seemingly destroyed by Xenobite’s schemes, had risen again as the world’s strongest—and most malevolent—nation. Hildegard, the Dragon Empress and sole survivor of the imperial family, declared war on the entire world. An army of inhuman beings marched forward, and lifeless corpses trampled the living. This war had no justice, no cause, no pride, not even a shred of dignity. It wasn’t a war for dominance—it was a war for annihilation. A path not of conquest, but of destruction. Princess Rutia of the Elven Kingdom of Silmaril, driven from her homeland by Galberia’s invasion, now races alone to stop Hildegard, her former ally turned the world’s greatest enemy. Two souls who’ve lost what they loved most, two knights of Eden’s Ritter bound by love and hate—their fierce battle will decide the fate of the world. This is a story of endings. Beyond ecstasy lies only a scorching hellfire—a purgatory that will consume everything. [Translated from dlsite]